InhibitorSelect 96-Well Protein Kinase Inhibitor Libiraries I & II (160 inhibitors; Cat. No. 539744 and 539745) were screened for influence on the proliferation and survival of the mouse neural stem cells (mNS) in an ATP bioluminescence cell viability assay. mNS cells were plated at 3,000 cells/well and viability assay performed after 2 days of incubation. Each compound was tested in each of four growth factor backgrounds: